Calculate your Body Mass Index using your weight and height. BMI is a quick screening measure that can help estimate whether your weight is in a general healthy range for your height.

Estimate your Basal Metabolic Rate, or BMR, using your age, sex, height, and weight. BMR is the estimated number of calories your body uses at rest.

Estimate body fat percentage from body measurements using the U.S. Navy circumference method.

Estimate daily calorie targets for weight loss based on TDEE and weekly weight-loss goal.

Estimate calories burned from activity duration, body weight, and MET value.

Estimate your exercise heart rate zones from your age, estimated maximum heart rate, and optional resting heart rate.

Estimate ideal body weight using a height-based formula. This calculator gives a general reference range, not a medical target or complete health assessment.

Calculate daily protein, carbohydrate, and fat targets from your calorie goal and preferred macro split.

Convert a distance and elapsed time into pace per mile or kilometer and average speed.

Check the time between bedtime and wake time against a sleep target you choose yourself.

Estimate distance from your step count and a stride length that you enter.

Check simple lifting volume per session and per week from weight, reps, sets, and weekly sessions.